There are two possible attacks for this.
The first way you lose a couple less troops and use less tools but you need alot more soldiers, I like to attack multiple level 61 towers so I always choose the least amount of soldier.
1.
Four waves
First two waves you will put nothing on left flank,
middle flank and right flank wave 1 and 2 will have 1 martyr.
Wave 3 and 4 you will use full veteran crossbowman or better on middle and right flank.
Tools. Wave 3 middle 9 rams and 10 ladders, right flank 10 ladders

No tools on fourth wave, with a 90 percent ranged commander you will lose about 18 troops.
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Attack 2
First two waves a martyr on left and right flank, nothing in center.
Third and fourth wave full crossbowmen or better on Left and right flank.
Tools third wave only.
17 ladders on Left flank and 18 ladders on right flank.
You will lose about 21 soldiers with a 90 percent ranged commander.